/
retry_test.ts
41 lines (36 loc) · 1.03 KB
/
retry_test.ts
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import { retry } from "./retry.ts";
import { assert, assertRejects } from "../testing/asserts.ts";
function generateErroringFunction(errorsBeforeSucceeds: number) {
let errorCount = 0;
return () => {
if (errorCount >= errorsBeforeSucceeds) {
return errorCount;
}
errorCount++;
throw `Only errored ${errorCount} times`;
};
}
Deno.test("[async] retry", async function () {
const threeErrors = generateErroringFunction(3);
const result = await retry(threeErrors, {
minTimeout: 100,
});
assert(result === 3);
});
Deno.test("[async] retry fails after max errors is passed", async function () {
const fiveErrors = generateErroringFunction(5);
await assertRejects(() =>
retry(fiveErrors, {
minTimeout: 100,
})
);
});
Deno.test("[async] retry throws if minTimeout is less than maxTimeout", async function () {
await assertRejects(() =>
retry(() => {}, {
minTimeout: 1000,
maxTimeout: 100,
})
);
});